3.1.4 Network monitoring examples
This subsection explains how to monitor network performance.
- Organization of this subsection
(1) Overview
You can monitor network information to check the response time of system functionality.
Continuous monitoring of network data traffic allows you to plan network reconfiguration or expansion.
The following table lists and describes the principal records and fields related to monitoring network performance.
|
Record |
Field |
Description (example) |
|---|---|---|
|
PI_NIND |
Pkts Rcvd/sec |
The number of packets received per second. If the value of this field is large, many packets have been received successfully. |
|
PI_NINS |
||
|
PI_NIND |
Pkts Xmitd/sec |
The number of packets sent per second. If the value of this field is large, many packets have been sent successfully. |
|
PI_NINS |
||
|
PI_NIND |
Max Transmission Unit |
The maximum packet size. In an environment in which an MTU is automatically allocated, if the value of this field is large (1500 or more), splitting of sent or received data occurs. If the value of this field is small (below 1500), the number of control signals and blocks increases. This increase could cause a network bottleneck. |
(2) Monitoring methods
(a) Monitoring for data traffic that exceeds the NIC bandwidth (the maximum amount of data that can be transferred per unit of time)
You can use the Network Rcvd/sec alarm provided by the monitoring template to monitor the bandwidth of a network interface card.
You can monitor the number of packets sent or received over the network by using an alarm to monitor the bandwidth of a network interface card (NIC).
If the number of packets continues to be at or above the threshold, you might need to upgrade the NIC or the physical network.
For details, see 3.2.4(1) Monitoring template.